Update Cargo.toml

Bump package version to 0.3.0 (previous commit didn't update it)

Author: jsdanielh

Cargo.toml

@@ -13,7 +13,7 @@ members = [
 resolver = "2"
 
 [workspace.package]
-version = "0.2.2"
+version = "0.3.0"
 authors = ["Janosch Gräf <[email protected]>", "The Nimiq Core Development Team <[email protected]>"]
 edition = "2021"
 homepage = "https://nimiq.com"